milestone.yml

name: milestone

on:
  push:
    branches: [master]

jobs:
  set-milestone:
    if: github.repository_owner == 'trinodb'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
      - name: Get milestone from pom.xml
        run: |
          .github/bin/retry ./mvnw -v
          echo "MILESTONE_NUMBER=$(./mvnw -q -Dexec.executable=echo -Dexec.args='${project.version}' -N exec:exec | cut -d- -f1)" >> $GITHUB_ENV
      - name: Set milestone to PR
        uses: actions/github-script@v4
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            // Get pull request number from commit sha
            // 'listPullRequestsAssociatedWithCommit()' lists the merged pull request
            // https://docs.github.com/en/rest/reference/repos#list-pull-requests-associated-with-a-commit
            const pr_response = await github.repos.listPullRequestsAssociatedWithCommit({ owner: context.repo.owner, repo:context.repo.repo, commit_sha: context.sha })
            if (pr_response.data.length === 0) {
              console.log('Pull request not found')
              return
            }
            if (pr_response.data.length > 1) {
              console.log(pr_response.data)
              throw 'Expect 1 pull request but found: ' + pr_response.data.length
            }

            // Get milestone
            const { MILESTONE_NUMBER } = process.env

            // Find milestone
            const response = await github.issues.listMilestones(context.repo)
            let milestone = response.data.find(milestoneResponse => milestoneResponse.title === MILESTONE_NUMBER)

            // Create new milestone if it doesn't exist
            if (!milestone) {
              const create_response = await github.issues.createMilestone({ owner: context.repo.owner, repo:context.repo.repo, title: MILESTONE_NUMBER })
              milestone = create_response.data
            }

            // Set milestone to PR
            await github.issues.update({ owner: context.repo.owner, repo: context.repo.repo, milestone: milestone.number, issue_number: pr_response.data[0].number })